Tip Bank

DevX - Software Development Resource

Database Integration

Question: I am developing an application in VB6 that uses its own DB. I need to link my application’s DB with clients’ DBS or even ERP systems. Therefore, I need

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Copying Part of a String

Question: I have a little problem which I can’t solve. I will give the question with an example. I’m working with Excel. In a cell the string “100dpi.txt” is written.

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Maximum Number of Objects on a Form

Question: Is there any way to get more than 255 objects on a VB form? Answer: No, there’s not a way to pass the limit of 255 objects per form.

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Manually Positioning Buttons in a Java Applet

You can use Java’s layout managers to maintain the relative position of objects in an applet without manually repositioning them as the applet’s size changes. However, you may occasionally want

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Where Should Template Definitions Appear?

Normally, you declare functions and classes in a .h file and place their definition in a separate .cpp file. With templates, this practice isn’t really useful because the compiler must

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The First Rule of Code Optimization

I recently received a question from a reader who asked how to sort a large file. My solution was based on the qsort() algorithm, which is the only sorting algorithm

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Floating Point Literals

In following expression: if (ticket_price > 7.50) What’s the type of the literal 7.50? One might think that it’s float. However, the actual type is double. To force the compiler